<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<div>
   <h1>注册页面</h1>
    <input type="text" placeholder="用户名" v-model="user.username">
    <input type="password" placeholder="密码" v-model="user.password">
    <input type="text" placeholder="昵称" v-model="user.nickname">
    <input type="button" value="注册" @click="reg()">
</div>
<!--引入axios和vue-->
<script src="https://cdn.bootcdn.net/ajax/libs/axios/0.21.1/axios.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/vue/2.6.14/vue.js"></script>
<script>
    let v = new Vue({
        el:"body>div",
        data:{
            user:{username:"",password:"",nickname:""}
        },
        methods:{
            reg(){
                //发起异步请求
                axios.post("/reg",v.user).then(function (response) {
                    if(response.data==1){
                        alert("注册成功");
                        location.href="/";
                    }else {
                        alert("用户名已存在!")
                    }
                })
            }
        },
        created:function () {

        }
    })

</script>

</body>
</html>